mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2026-06-10 16:28:27 +02:00
d7b23e9f3a
Some hw + kms driver combos do not support vblank related functions
at all, ie. no drmCrtc[Get/Queue]Sequence() ioctl, no crtc sequence
events, no vblank of pageflip completion reported in pageflip events.
Most notable under the present_timing supported Vulkan drivers is
Asahi Linux on Apple Silicon Macs, with no such support: Only pageflip
events with a valid flip timestamp are supported.
To deal with this, we detect lack of vblank support and instead
use the current "vrr timing" path, which doesn't use vblanks, but
absolute time and timed waits. This also required a slight restructuring
of the setup logic.
Also fix semantics of requested relative timed presents via
VK_PRESENT_TIMING_INFO_PRESENT_AT_RELATIVE_TIME_BIT_EXT. The
spec states that the given target time should be relative to
the most recently presented image on a swapchain, and that if
no such image was presented yet (during the first present on
a swapchain), the relative target present time should be ignored.
Take care of this by tracking vblank count and time of the most
recent completed swapchain present separately from the most recent
known vblank count and time of the connector. Choose the swapchain
most recent present vblank data as baseline for relative timed
presents, to optimally implement spec semantics, but the connectors
vblank data for absolute timed presents to minimize rounding errors
and drift when converting between time and vblank cycle counts.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Fixes:
|
||
|---|---|---|
| .. | ||
| amd | ||
| android_stub | ||
| asahi | ||
| broadcom | ||
| c11 | ||
| compiler | ||
| drm-shim | ||
| egl | ||
| etnaviv | ||
| freedreno | ||
| gallium | ||
| gbm | ||
| getopt | ||
| gfxstream | ||
| glx | ||
| gtest | ||
| imagination | ||
| imgui | ||
| intel | ||
| kosmickrisp | ||
| loader | ||
| mesa | ||
| microsoft | ||
| nouveau | ||
| panfrost | ||
| poly | ||
| tool | ||
| util | ||
| virtio | ||
| vulkan | ||
| x11 | ||
| .clang-format | ||
| meson.build | ||